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// Other services

Port 4725: TruckStar Service

Port 4725 is assigned by IANA to truckstar (TruckStar Service).

4725

How truckstar works

Other services
client:4725truckstarresponse client:4725truckstarresponse

The client sends a request to port 4725 and the truckstar service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 4725 dangerous?

We have no specific security note for port 4725. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 4725

ServicePortTransportDescriptionReferenceUpdated
truckstar 4725 TCP, UDP TruckStar Service - 2010-10-15

// source: IANA service name and port number registry

03 Check it

Which program uses port 4725, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4725'      # process listening on 4725
sudo lsof -nP -i :4725

macOS

sudo lsof -nP -i :4725

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4725 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4725
netstat -ano | findstr :4725

From another machine

nmap -p 4725 -sV <host>
sudo nmap -sU -p 4725 <host>
nc -zv <host> 4725

Block it in the firewall

sudo ufw deny 4725/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4725" -Direction Inbound -LocalPort 4725 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4725 used for?

Port 4725 is assigned by IANA to truckstar (TruckStar Service).

Is port 4725 TCP or UDP?

Port 4725 is registered for TCP and UDP.

Is it safe to open port 4725?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 4725 is open?

On Linux run "ss -ltnup 'sport = :4725'", on macOS "lsof -nP -i :4725", and on Windows "netstat -ano | findstr :4725" to see the local process. From another machine, "nmap -p 4725 <host>" shows whether it is reachable.

05 Related
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